Operating
Manual
YM5 Permanent Magnet Yoke
Faraday Road, South Dorcan Industrial Estate, Swindon, SN3 5HE, UK
Telephone: + 44 (0)1793 524566 Fax: +44 (0)1793 490459
Email: sales.eu@magnaflux.com Web: eu.magnaflux.com
Bahnhofstr 94-98, 73457 Essingen, Deutschland
Telephone: +49 (0) 7365 81-0 Fax: +49 (0) 7365 81-449
Email: sales.de@magnaflux.com Web: eu.magnaflux.com/de
3.2 ACCESSORIES
Yoke Test Weight (18kg)
Part number: 026T018A
YM5 Recharging Unit
If it is not convenient to return your YM5 Yoke to Magnaflux for re-magnetising,
we have a specially-designed fixture which allows you to re-magnetise it yourself.
The unit is simple to operate, using a battery, discharging through coils which have
the poles of the YM5 Yoke within them.
YM5 Yoke recharging unit (batteries NOT included) - Part number: 007E100
YM5 Yoke recharging unit, including batteries - Part number: 07E100B
5
3. RECOMMENDED PRODUCTS
3.1 CHEMICAL CONSUMABLES
PREPARED INKS
Flash point
(PMCC)
Viscosity
(mm2/s)
Density
(g/cm3)
Particle
size (µm)
Settlement
volume
OIL-BASED (high-flash, low-odour kerosene base)
410HF 93
o
C 3.45 0.81 7 - 25 0.12% V/V
14HF 93
o
C 3.45 0.81 2 - 25 0.25% V/V
7HF 93
o
C 3.45 0.81 0.6 - 2.5 2.5% V/V
WATER-BASED
WB-12 N/A N/A 1.2 7 - 9 0.1 - 0.4 ml
MF-655 WB N/A N/A 1 .1 3 - 5 0.13 - 0.21 ml
DRY POWDERS
MAGNAVIS dry powders have closely-controlled particle size and shape, and
come in a range of colours to give the best possible contrast on a wide variety
of finishes. For best results, the powder should be cloud-applied near the surface
while the current is flowing.
Maximum working temperatures:
MAGNAVIS
®
1 Grey 315 oC
MAGNAVIS® 8A Red 175 oC
CONTRAST PAINT
Use MAGNAVIS
®
WCP-2 White Contrast Paint when the contrast between the test
surface and the ink/powder is not clear enough for inspection. Apply a thin coating
for WCP-2 to the surface prior to testing.
SPECIFICATIONS
MAGNAGLO and MAGNAVIS concentrates, prepared inks and dry powders meet
the requirements of ASTM E1444. Our oil-suspended inks and concentrates meet
AMS specifications, plus appropriate industrial and Government specifications,
Certifications are available on request.
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4
Certificate of Conformity
YM5 Serial Number:
Date of Manufacture:
Certified that the above item conforms to and meets the requirements of the following:
Specifications
ASME V ART7
EN-ISO 9934-3
MIL-STD-271F(SH)
Certificate is issued under the auspices of the Equipment Product
Manager:
Magnaflux (A Division of ITW Ltd),
Faraday Road, South Dorcan Industrial Estate, Swindon, SN3 5HE, UK
Tel: +44 (0)1793 524566 Fax: +44 (0)1793 490459
Email: sales.eu@magnaflux.com www.eu.magnaflux.com
3
2
Item Description Part number Quantity
1 Contacts 6975A3 2
2 Magnet 001M003 2
3 Arm 14187A3 2
4 Handle 6976A3 2
5 Spring, disc type 010S024 12
6 Retainer 14185A3 2
7 Keeper bar 6493A3 1
WARNING: DO NOT REPLACE ANY PARTS WITH ANYTHING OTHER THAN
THOSE RECOMMENDED BY MAGNAFLUX.
2.1 PARTS LIST
1. OPERATING THE YM5 YOKE
1. Place the Yoke on the workpiece perpendicular to the direction of the cracks.
The double-jointed articulated legs can be moved in two directions at each joint,
and the pole pieces rotate.
2. Adjust the spacing between the legs to between 25 and 250mm. If the part is an
irregular shape, contour the feet to ensure a good flat contact point.
3. Apply the inspection medium (wet or dry). Surface crack indications will form
immediately.
4. Repeat as required, moving the Yoke over the part. Each placement of the Yoke
will find cracks in a 150 x 150mm area.
Magnetic contact exists only between the Yoke and the test piece, so arcing on the
part itself is impossible. However, to avoid potential damage, care must be taken
when presenting the Yoke to the workpiece.
You can check the strength of the Yoke by applying inspection medium to the
keeper bar,which has artificial defects. Only remove the keeper bar to carry out
inspection work.
IMPORTANT NOTE: If you take the YM5 apart, it will lose its magnetic strength.
2. TECHNICAL SPECIFICATION
Magnet elements Magloy 1
Field strength with poles together
230
o
C
Supplied with a keeper bar Ye s
Typical weight 3 kg
Lifting power Not less than 18 kg
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